Three-octave supercontinuum spanning with Z-cut lithium niobate photonic waveguide

Abstract

We numerically demonstrate three-octave supercontinuum generation using the z-cut lithium niobate waveguide by dispersion engineering. The photonic waveguide structure is designed to exhibit anomalous dispersion when pumped at 1.55 $\text{μ}\mathrm{m}$ wavelength. By altering the waveguide width, tunable zero-dispersion wave generation has been achieved up to 6 $\text{μ}\mathrm{m}$ wavelength. Our findings show the broadest supercontinuum spanning in the mid-IR region using a lithium niobate platform, making it a promising candidate for various applications in optical communication, sensing, and imaging.

Keywords:

• Z-cut lithium niobate photonic waveguide
• mid-IR dispersive wave generation
• three octave supercontinuum spaning
• dispersion-engineering

Disclosure statement

No potential conflict of interest was reported by the author(s).